Home / 1,247,511,429.60-1,869,251,605.20-786,624,799.20

Finding the Fourth Proportional to 1,247,511,429.60, 1,869,251,605.20 and 786,624,799.20

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Solution

The fourth proportional to 1,247,511,429.60, 1,869,251,605.20 and 786,624,799.20 is: 1,178,666,290.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,511,429.60 : 1,869,251,605.20 = 786,624,799.20 : x
  2. Step 2: Convert to fraction form
    1,247,511,429.60/1,869,251,605.20 = 786,624,799.20/x
  3. Step 3: Cross multiply
    1,247,511,429.60x = 1,869,251,605.20 × 786,624,799.20
  4. Step 4: Simplify right side
    1,247,511,429.60x = 1,470,399,668,594,727,680
  5. Step 5: Solve for x
    x = 1,470,399,668,594,727,680/1,247,511,429.60
  6. Step 6: Final answer
    x = 1,178,666,290.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.